* {
    box-sizing: border-box;
    outline: none;
}

html {
    height: 100%;
}

body {
    font-family: pingfang SC, 微软雅黑, helvetica neue, arial,
    hiragino sans gb, microsoft yahei ui, microsoft yahei, simsun, serif;
    color: #333;
    margin: 0;
    height: 100%;
    font-size: 14px;
}

#app {
    height: 100%;
}